First of all, give your daughter a big congratulations from me!!! She must be really excited.
Second of all, how Christmasy will this Christmas theme be? I saw a website once where the bride and groom went ALL out, and the bride was even wearing a red velvet dress with white faux-fur trim, like Santa Claus. I'm serious....the thing had a ridiculously long train too. But nevertheless, I think if your daughter went with a white and silver colour scheme, with white Christmas lights, and maybe small, potted pine trees with fake snow on them, then that might work well. Oh, and for centrepieces, she could arrange some pine cones in glass bowls, with either coloured glass Christmas balls (in whatever colours she wants.....I think you said something about red), small sprigs of holly, or both. If your daughter plans on going all out, maybe she could even replace the traditional limo to the church with a horse-drawn sleigh? I don't know, just a thought......I'm not even close to being ready to get married, but it's still fun fantasizing, lol.